Commit 9ee29fb0 authored by knopp's avatar knopp

changes for S-subframe support in fronthaul

parent 90015dfb
......@@ -22,6 +22,23 @@
#include "defs.h"
#include "log.h"
uint16_t dl_S_table_normal[10]={3,9,10,11,12,3,9,10,11,6};
uint16_t dl_S_table_extended[10]={3,8,9,10,3,8,9,5,0,0};
void set_S_config(LTE_DL_FRAME_PARMS *fp) {
int X = fp->srsX;
fp->ul_symbols_in_S_subframe=(1+X);
if ((fp->Ncp==EXTENDED) && (fp->tdd_config_S>7))
AssertFatal(1==0,"Illegal S subframe configuration for Extended Prefix mode\n");
fp->dl_symbols_in_S_subframe = (fp->Ncp==NORMAL)?dl_S_table_normal[fp->tdd_config_S] : dl_S_table_extended[fp->tdd_config_S];
}
int init_frame_parms(LTE_DL_FRAME_PARMS *frame_parms,uint8_t osf)
{
......@@ -29,7 +46,7 @@ int init_frame_parms(LTE_DL_FRAME_PARMS *frame_parms,uint8_t osf)
LOG_I(PHY,"Initializing frame parms for N_RB_DL %d, Ncp %d, osf %d\n",frame_parms->N_RB_DL,frame_parms->Ncp,osf);
if (frame_parms->Ncp==1) {
if (frame_parms->Ncp==EXTENDED) {
frame_parms->nb_prefix_samples0=512;
frame_parms->nb_prefix_samples = 512;
frame_parms->symbols_per_tti = 12;
......@@ -37,8 +54,10 @@ int init_frame_parms(LTE_DL_FRAME_PARMS *frame_parms,uint8_t osf)
frame_parms->nb_prefix_samples0 = 160;
frame_parms->nb_prefix_samples = 144;
frame_parms->symbols_per_tti = 14;
}
switch(osf) {
case 1:
log2_osf = 0;
......@@ -167,6 +186,8 @@ int init_frame_parms(LTE_DL_FRAME_PARMS *frame_parms,uint8_t osf)
printf("lte_parms.c: Setting N_RB_DL to %d, ofdm_symbol_size %d\n",frame_parms->N_RB_DL, frame_parms->ofdm_symbol_size);
if (frame_parms->frame_type == TDD) set_S_config(frame_parms);
// frame_parms->tdd_config=3;
return(0);
}
......
......@@ -33,6 +33,7 @@
#include "PHY/defs.h"
#include "PHY/TOOLS/alaw_lut.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
//#include "targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h"
#include "targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h"
......@@ -54,11 +55,14 @@ void send_IF4p5(PHY_VARS_eNB *eNB, int frame, int subframe, uint16_t packet_type
IF4p5_header_t *packet_header=NULL;
eth_state_t *eth = (eth_state_t*) (eNB->ifdevice.priv);
int nsym = fp->symbols_per_tti;
if (eNB->CC_id==0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF4, 1 );
if (packet_type == IF4p5_PDLFFT) {
if (subframe_select(fp,subframe)==SF_S)
nsym=fp->dl_symbols_in_S_subframe;
db_fulllength = 12*fp->N_RB_DL;
db_halflength = (db_fulllength)>>1;
slotoffsetF = (subframe)*(fp->ofdm_symbol_size)*((fp->Ncp==1) ? 12 : 14) + 1;
......@@ -74,7 +78,7 @@ void send_IF4p5(PHY_VARS_eNB *eNB, int frame, int subframe, uint16_t packet_type
}
gen_IF4p5_dl_header(packet_header, frame, subframe);
for (symbol_id=0; symbol_id<fp->symbols_per_tti; symbol_id++) {
for (symbol_id=0; symbol_id<nsym; symbol_id++) {
if (eNB->CC_id==1) LOG_I(PHY,"DL_IF4p5: CC_id %d : frame %d, subframe %d, symbol %d\n",eNB->CC_id,frame,subframe,symbol_id);
for (element_id=0; element_id<db_halflength; element_id++) {
......@@ -107,6 +111,12 @@ void send_IF4p5(PHY_VARS_eNB *eNB, int frame, int subframe, uint16_t packet_type
slotoffsetF = 1;
blockoffsetF = slotoffsetF + fp->ofdm_symbol_size - db_halflength - 1;
if (subframe_select(fp,subframe)==SF_S) {
nsym=fp->ul_symbols_in_S_subframe;
slotoffsetF += (fp->ofdm_symbol_size*(fp->symbols_per_tti-nsym));
blockoffsetF += (fp->ofdm_symbol_size*(fp->symbols_per_tti-nsym));
}
if (eth->flags == ETH_RAW_IF4p5_MODE) {
packet_header = (IF4p5_header_t *)(tx_buffer + MAC_HEADER_SIZE_BYTES);
data_block = (uint16_t*)(tx_buffer + MAC_HEADER_SIZE_BYTES + sizeof_IF4p5_header_t);
......@@ -117,7 +127,7 @@ void send_IF4p5(PHY_VARS_eNB *eNB, int frame, int subframe, uint16_t packet_type
gen_IF4p5_ul_header(packet_header, packet_type, frame, subframe);
if (packet_type == IF4p5_PULFFT) {
for (symbol_id=0; symbol_id<fp->symbols_per_tti; symbol_id++) {
for (symbol_id=fp->symbols_per_tti-nsym; symbol_id<fp->symbols_per_tti; symbol_id++) {
LOG_D(PHY,"IF4p5_PULFFT: frame %d, subframe %d, symbol %d\n",frame,subframe,symbol_id);
for (element_id=0; element_id<db_halflength; element_id++) {
i = (uint16_t*) &rxdataF[0][blockoffsetF+element_id];
......@@ -293,6 +303,7 @@ void recv_IF4p5(PHY_VARS_eNB *eNB, int *frame, int *subframe, uint16_t *packet_t
(int16_t*) (rx_buffer+sizeof_IF4p5_header_t),
PRACH_BLOCK_SIZE_BYTES);
}
} else if (*packet_type == IF4p5_PULTICK) {
} else {
AssertFatal(1==0, "recv_IF4p5 - Unknown packet_type %x", *packet_type);
......
......@@ -504,6 +504,8 @@ typedef struct {
uint8_t tdd_config;
/// TDD S-subframe configuration (0-9)
uint8_t tdd_config_S;
/// srs extra symbol flag for TDD
uint8_t srsX;
/// indicates if node is a UE (NODE=2) or eNB (PRIMARY_CH=0).
uint8_t node_id;
/// Frequency index of CBMIMO1 card
......@@ -542,6 +544,10 @@ typedef struct {
uint32_t samples_per_tti;
/// Number of OFDM/SC-FDMA symbols in one subframe (to be modified to account for potential different in UL/DL)
uint16_t symbols_per_tti;
/// Number of OFDM symbols in DL portion of S-subframe
uint16_t dl_symbols_in_S_subframe;
/// Number of SC-FDMA symbols in UL portion of S-subframe
uint16_t ul_symbols_in_S_subframe;
/// Number of Physical transmit antennas in node
uint8_t nb_antennas_tx;
/// Number of Receive antennas in node
......
......@@ -2817,12 +2817,15 @@ void phy_procedures_eNB_common_RX(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc){
const int frame = proc->frame_rx;
int offset = (eNB->single_thread_flag==1) ? 0 : (subframe&1);
if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)!=SF_UL)) return;
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX0_ENB+offset, proc->frame_rx );
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_RX0_ENB+offset, proc->subframe_rx );
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX_COMMON+offset, 1 );
if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)!=SF_UL)) return;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_RX_COMMON+offset, 1 );
start_meas(&eNB->phy_proc_rx);
LOG_D(PHY,"[eNB %d] Frame %d: Doing phy_procedures_eNB_common_RX(%d)\n",eNB->Mod_id,frame,subframe);
......
......@@ -768,8 +768,18 @@ void fh_if4p5_asynch_DL(PHY_VARS_eNB *eNB,int *frame,int *subframe) {
int subframe_tx,frame_tx;
symbol_number = 0;
symbol_mask_full = (1<<fp->symbols_per_tti)-1;
symbol_mask_full = (subframe_select(fp,*subframe) == SF_S) ? (1<<fp->dl_symbols_in_S_subframe) : (1<<fp->symbols_per_tti)-1;
// correct for TDD
if (fp->frame_type == TDD) {
while (subframe_select(fp,*subframe) == SF_UL) {
*subframe=*subframe+1;
if (*subframe==10) {
*subframe=0;
*frame=*frame+1;
}
}
}
do { // Blocking, we need a timeout on this !!!!!!!!!!!!!!!!!!!!!!!
recv_IF4p5(eNB, &frame_tx, &subframe_tx, &packet_type, &symbol_number);
if (proc->first_tx != 0) {
......@@ -1033,6 +1043,8 @@ void rx_fh_if4p5(PHY_VARS_eNB *eNB,int *frame,int *subframe) {
LOG_D(PHY,"rx_fh:if4p5: frame %d, subframe %d, PULFFT symbol %d\n",f,sf,symbol_number);
proc->symbol_mask[sf] = proc->symbol_mask[sf] | (1<<symbol_number);
} else if (packet_type == IF4p5_PULTICK) {
break;
} else if (packet_type == IF4p5_PRACH) {
LOG_D(PHY,"rx_fh:if4p5: frame %d, subframe %d, PRACH\n",f,sf);
// wakeup prach processing
......
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